Military dog that survived five tours of duty succumbs to cancer

A photo of Lucky is shown during a memorial service to commemorate his life on Jan. 5, 2012 at Fairchild Air Force Base, Wash. Lucky was deployed five times with the 92nd Security Forces Squadron to Afghanistan, Iraq and Kyrgyzstan and also supported the Secret Service.

Staff Sgt. Gerald Martinez, left, one of Lucky's handlers, salutes the dog 's photo during a memorial service on Thursday.

Lucky’s latest handler, Staff Sgt. Chris Fall, who discovered Lucky’s tumor five days before they returned to Fairchild said, “It was pretty tough,” acknowledging the close relationship between military working dogs and soldiers.